Overview
The LTC2309HF, produced by Analog Devices Inc., is a low noise, low power, 8-channel, 12-bit successive approximation analog-to-digital converter (ADC) with an I2C compatible serial interface. This ADC is designed to offer high performance and efficiency, making it suitable for a variety of applications, particularly in space-constrained and battery-operated systems. It features an internal reference and a fully differential sample-and-hold circuit to reduce common mode noise, and it operates from a single 5V supply with a low power consumption of 1.5mW at 1ksps and 35µW in sleep mode.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12 Bits (No Missing Codes) | |
| Integral Linearity Error | ±0.45 LSB | |
| Differential Linearity Error | ±0.35 LSB | |
| Bipolar Zero Error | ±1 LSB | |
| Throughput Rate | 14 ksps | |
| Signal-to-Noise Ratio (SNR) | 73.4 dB | |
| Power Consumption at 1ksps | 1.5 mW | |
| Power Consumption in Sleep Mode | 35 µW | |
| Supply Voltage | 5 V | |
| Operating Temperature Range | -40°C to 125°C | |
| Package Types | 24-pin QFN, 20-pin TSSOP | |
| Conversion Time | 1.3 µs | |
| Input Ranges | Unipolar (0V to 4.096V), Bipolar (±2.048V) |
Key Features
- Low noise and low power consumption
- 12-bit resolution with no missing codes
- Internal 2.5V reference and 8-channel multiplexer
- Fast conversion time of 1.3µs
- 2-wire I2C compatible serial interface with nine addresses plus one global for synchronization
- Unipolar or bipolar input ranges (software selectable)
- Guaranteed operation from -40°C to 125°C (TSSOP package)
- Available in 24-pin QFN and 20-pin TSSOP packages
- Lead-free and ROHS compliant
Applications
- Industrial process control
- Motor control
- Accelerometer measurements
- Battery-operated instruments
- Isolated and/or remote data acquisition
- Power supply monitoring
Q & A
- What is the resolution of the LTC2309?
The LTC2309 has a 12-bit resolution with no missing codes.
- What is the power consumption of the LTC2309 at 1ksps?
The power consumption is 1.5mW at 1ksps.
- What are the available package types for the LTC2309?
The LTC2309 is available in 24-pin QFN and 20-pin TSSOP packages.
- What is the operating temperature range of the LTC2309?
The operating temperature range is -40°C to 125°C.
- Does the LTC2309 support both unipolar and bipolar input ranges?
- What is the conversion time of the LTC2309?
The conversion time is 1.3µs.
- Is the LTC2309 lead-free and ROHS compliant?
- What is the signal-to-noise ratio (SNR) of the LTC2309?
The SNR is 73.4 dB.
- What are some typical applications of the LTC2309?
Typical applications include industrial process control, motor control, accelerometer measurements, battery-operated instruments, isolated and/or remote data acquisition, and power supply monitoring.
- Does the LTC2309 have an internal reference and multiplexer?
